Electrode-holder.



H. J. POTTS.

ELECTRODE HOLDER.

APPLICATION FILED 111:0. 2a, 1912v Patented Dec. 8, 1914.

UNTTED STATES PATENT OFFICE;

HILLARD, J. POTTS, OF KANSAS CITY, MISSOURI.

ELECTRODE-HOLDER.

Application filed December 23, 1912.

To all whom it may concern:

Be it known that I, HILLARD J. Porrs, a citizen of the United States,residing at Kansas City, in the county of Jackson, State of irlissouri,have invented certain new and useful Improvements in Electrode-Helders;and I do hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same.

This invention relates to electrode holders and has for an, object toprovide a device of this character which will hold ditlerent sizes ofelectrodes just as securely as the larger lengths of electrodes, andwill be rom 'iosed of a minimum nun'iber of simple parts that will noteasily get out oil order.

W'ith the above objec in view the inven tion consists of certain noveldetails o't construction and combination of parts hereinafter fullydescribed and claimed, it being understood that various modificationsmay be made in the minor details of construction within. the scope ofthe appended claims.

in the a ecoinpanying drawing forming part oi this specification: Figure1 is a side elevation of the holder. Fig. 2 is an end elevation of theholder. Fig. 3 is a longitudinal sectional view through the holder. Fig.4: is a cross sectional view taken on the line 4 4 Fig. l.

Referring now to the drawing in which like characters of referencedesignate similar parts, 10 designates the body of the holder which issubstantially triangular in cross section and is provided on the bottomwith an attaching base 11. The holder is provided above the base with alaterally projecting lug 12 in which is formed a threaded opening 18 inwhich an adjusting screw l l-v disposed, this adjusting screw extendinglongitudinally of the holder and having the threads on one sidemutilated to torin a flat face 15 that extends longitudinall y from endto end of the adjusting screw.

The lug 12 is terminally bifurcated to term hinge cars 16, and betweenthese hinge ears a resilient clamp arm 17 is interposed, the clamp armhaving the lower end curved abruptly inwardly as shown at 18 below thehinge ears and bearing terminally against the flat face 15 of theadjusting screw, while the upper end 19 of the arm is bent inwardly tooverlie the tip of the adjusting screw and is terminally bent outwardlyas shown at 20 Specification of Letters Patent.

Patented Dec. 8, 1914.

Serial No. 738,276.

to form a guide surface which facilitates insertlon of the electrode 21between the V- shaped inner face of the holder and the free end of theclamp arm. A retaining pin 22 is passed through alined openings 23formed in the hinge ears and bears against the outer face of the clamparm, this pin serving to bind the clamp arm against the adjusting screwand against the electrode. The clamp arm is formed with shoulders 2 t onthe side edges which engage with the top edges of the hinge cars andprevent gravitation of the clamp arm when the electrode is removed.

By virtue of the clamp arm bearing tightly against the flat face of theadjusting screw, the latter will be prevented from accidental retrogrademovement, while at the same time the adj listing screw may be manuallyadvanccd to move the electrode longitudinally beyond the end of theholder. l urthermore, by virtue of the clamp arm free end overhangingthe tip of the adjusting screw, short lengths of electrodes may beinserted in the holder and will be securely held by the clamp armregardless of whether the adjusting screw contacts with the electrode ornot. All the figures show the electrode as partly consumed and the setscrew in position to hold the electrode projecting properly from theholder at this stage.

The attaching base 11 is beveled at the edges as shown at 24L and onecorner is cut away as shown at 25 to facilitate entry of the base intothe ordinary lamp clamp without obstruction. A V-shaped notch 26 isformed at the tip of the spring to produce sharpened edges whichpenetrate and remove scale during rotation of the electrode.

What is claimed, is

1. An electrode holder including a body having an electrode receivingface, a lug projecting from said face, an electrode adjusting screwthreaded through said lug, and an electrode leaf spring clamp heldintermediate the ends by said lug and having one end overhanging the tipof said screw and having the other end abruptly bent toward andterminally contacting with said screw below said lug.

2. An electrode holder including a body, a lag projecting from saidbody, an adjusting screw threaded through said lug and extendinglongitudinally of said body, and having a fiat longitudinal face, and anelectrode leaf spring clamp held intermediate the ends by said lug andhaving one end overhanging the tip of said screw and having the otherend bent toward and terminally contacting with said flat face below saidlug.

3. An electrode holder including a body, a lug projecting from saidbody, an adjusting screw threaded through said lug and extendinglongitudinally of said body, an electrode leaf spring clamp heldintermediate the ends loosely upon said lug and having one endoverhanging the tip of said screw and having the opposite end benttoward and contacting with said screw below said lug and means ornormally holding said clamp against movement longitudinally of saidbody.

4. An electrode holder including a body,

a lug projecting from said body, an adjusting screw threaded throughsaid lug and extending longitudinally of said body, said lug beingterminally bifurcated to form cars, a pin carried by said ears, and anelectrode leaf spring clamp confined between said cars by said pin andhaving one end overhanging the tip of said screw and having the oppositeend terminally bent toward and contacting with said screw below saidlug.

In testimony whereof, I aflix niy signature, in the presence of twowitnesses.

HILLARD J POTTS.

Vitnesses WILLIAM F. Porrs, E. J. ANDREWS.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents. Washington, D. C.

